Vaccinium hybrid plant named ‘RIDLEY 1403’

ABSTRACT

A new and distinct cultivar of  Vaccinium  hybrid plant named ‘RIDLEY 1403’, characterized by its combination of upright to semi-upright plant growth habit and strong plant growth vigor, evergreen foliage, very early flowering, early to medium time of ripening of fruit, very large fruit size, medium firm fruit suited to handling, attractive dark blue fruit color, flavorsome fruit with good sweetness and acidity balance and a small dry picking scar. This combination results in high quality fruit with larger size than other varieties.

Latin name of genus and species of plant claimed: Vaccinium hybrid.

Variety denomination: ‘RIDLEY 1403’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct perennial variety of Vaccinium hybrid (Southern Highbush Blueberry), which has been given the variety denomination of ‘RIDLEY 1403’. Its market class is that of a fruiting plant. ‘RIDLEY 1403’ is intended for use as fresh fruit for shipping, customer pick and processing markets and as a home garden plant.

The new Vaccinium hybrid cultivar is a selection resulting from seedlings produced in a breeding programme of Vaccinium at Lindendale, NSW, Australia in 2006 from a controlled pollination of seed parent ‘S02-25-05’ (unpatented) by pollen parent ‘S03-08-02’ (unpatented). The new cultivar was discovered and selected as a single plant designated ‘M08-14-03’ within a population of one hundred plants of Vaccinium hybrids in 2008 in a commercial field plantation environment at Lindendale, New South Wales, Australia. Selection criteria was a combination of strong plant growth vigor, low chilling requirement, early to medium season of fruit ripening, small picking scar, strong berry firmness, high yield, very large berry size, good flavor, and sweet, crisp fruit. The selection was subsequently evaluated for over two years at commercial farms at Lindendale, New South Wales, Australia.

Asexual reproduction of the new cultivar by cutting propagation since 2008 at Lindendale, New South Wales, Australia and has demonstrated that the new cultivar reproduces true to type with all of the characteristics, as herein described, firmly fixed and retained through successive generations of such asexual propagation.

The new variety has been primarily compared to the ‘C99-42’ (U.S. Pat. No. 20,695). In Lindendale, New South Wales, Australia the plant growth vigour of ‘RIDLEY 1403’ is ‘strong’ whereas the plant growth vigour of ‘C99-42’ is ‘medium to strong’. The leaf width of ‘RIDLEY 1403’ is ‘broad’ (mean 35.1 mm) whereas the leaf width of ‘C99-42’ is ‘medium to broad’ (mean 30.2 mm). The berry diameter of ‘RIDLEY 1403’ is ‘very large (mean 24.0 mm) whereas the berry diameter of ‘C99-42’ is ‘large’ (mean 18.4 mm). The berry calyx basin diameter of ‘RIDLEY 1403’ is ‘large’ (mean 8.1 mm) whereas the berry calyx basin diameter of ‘C99-42’ is ‘medium’ (mean 6.3 mm). The berry sweetness of ‘RIDLEY 1403’ is rated as ‘high’ whereas the sweetness of ‘C99-42’ is ‘medium’. The berry acidity of ‘RIDLEY 1403’ is rated as ‘medium to high’ whereas the acidity of ‘C99-42’ is ‘low to medium’. This combination of vegetative and fruiting attributes results in ‘RIDLEY 1403’ being a desirable variety for mid season commercial production.

‘RIDLEY 1403’ can also be compared to the variety ‘CO3-158’ (unpatented). The plant growth habit of ‘RIDLEY 1403’ is ‘upright to semi-upright’ whereas the plant growth habit of ‘CO3-158’ is ‘semi-upright’. In Lindendale, New South Wales, Australia the time of vegetative bud burst of ‘RIDLEY 1403’ is classified as ‘early to medium’ whereas the time of vegetative bud burst of ‘CO3-158’ is classified as ‘early’. The time of beginning of flowering of ‘RIDLEY 1403’ is classified as ‘very early’ whereas the time of beginning of flowering of time of ‘CO3-158’ is classified as ‘early to medium’. The berry shape of ‘RIDLEY 1403’ is round whereas the berry shape of ‘CO3-158’ is oblate. The berry diameter of ‘RIDLEY 1403’ is ‘very large (mean 24.0 mm) whereas the berry diameter of ‘CO3-158’ is ‘large’ (mean 18.5 mm).The berry calyx basin diameter of ‘RIDLEY 1403’ is ‘large’ (mean 8.1 mm) whereas the berry calyx basin diameter of ‘CO3-158’ is ‘medium to large’ (mean 7.2 mm). The depth of berry calyx basin of ‘RIDLEY 1403’ is ‘deep’ whereas the depth of berry calyx basin of ‘CO3-158’ is ‘shallow’. The berry acidity of ‘RIDLEY 1403’ is ‘medium to high’ whereas ‘CO3-158’ is ‘medium’. See Table 1 for comparisons

SUMMARY OF THE INVENTION

The following characteristics of the new cultivar have been repeatedly observed and can be used to distinguish ‘RIDLEY 1403’ as a new and distinct cultivar of Vaccinium hybrid plant:

-   -   1. Upright to semi-upright plant growth habit     -   2. Very early timing of beginning of flowering     -   3. Early-medium timing of fruit ripening     -   4. Strong plant growth vigor     -   5. Berry diameter is very large     -   6. Dark blue berry color     -   7. Berry firmness is medium     -   8. Berry sweetness is medium     -   9. Berry acidity is medium to high     -   10. Picking scar is dry         Plants of the new cultivar differ from plants of the seed parent         ‘S02-25-05’ in that the berry diameter of ‘RIDLEY 1403’ is ‘very         large whereas the berry diameter of ‘S02-25-05’ is medium. Plant         growth vigour of ‘RIDLEY 1403’ is ‘strong’ whereas the plant         growth vigour of the seed parent is medium. Berry color is very         dark whereas the seed parent berry color is medium dark. Plants         of ‘RIDLEY 1403’ have an upright to semi-upright plant growth         habit which is less bushy than plants of the seed parent which         have a bushy semi-upright growth habit. Plants of the new         cultivar differ from plants of the pollen parent ‘S03-08-02’ in         that the berry diameter of ‘RIDLEY 1403’ is ‘very large whereas         the berry diameter of ‘S03-08-02’ is medium. Plants of ‘RIDLEY         1403’ have an upright to semi-upright plant growth habit which         is less bushy than plants of the pollen parent which have a very         bushy semi-upright growth habit. The berry sweetness of ‘RIDLEY         1403’ is rated as ‘high’ whereas the sweetness of the pollen         parent is ‘medium’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show, as nearly true as it is reasonably possible to make the same in color illustrations of this type, typical flower and foliage characteristics of the new cultivar. Colors in the photographs differ slightly from the color values cited in the detailed description, which accurately describes the colors of ‘RIDLEY 1403’.

FIG. 1 illustrates a ‘RIDLEY 1403’ in a commercial field planting.

FIG. 2 illustrates a ‘RIDLEY 1403’ leaf, flower and berry shapes and dimensions.

FIG. 3 illustrates ‘RIDLEY 1403’ berries

FIG. 4 illustrates a ‘RIDLEY 1403’ flowers

DETAILED BOTANICAL DESCRIPTION

The following is a detailed botanical description of a new and distinct variety of a Vaccinium hybrid ornamental plant known as ‘RIDLEY 1403’. Plant observations were made on plants grown in Lindendale, New South Wales, Australia. Unless indicated otherwise, the descriptions disclosed herein are based upon observations made in August 2009 of mature ‘RIDLEY 1403’ plants (age 4 years) grown in outdoor field plantings with day temperature ranging from 21° C. to 23° C., night temperatures ranging from 10° C. to 12° C., and light levels ranging from 6 to 8 klux. Those skilled in the art will appreciate that certain characteristics will vary with older or, conversely, younger plants. ‘RIDLEY 1403’ has not been observed under all possible environmental conditions. Where dimensions, sizes, colors and other characteristics are given, it is to be understood that such characteristics are approximations or averages set forth as accurately as practicable. The phenotype of the variety may vary with variations in the environment such as season, temperature, light quality, light intensity, day length, cultural conditions and the like. Color notations are based on The Royal Horticultural Society Colour Chart, of The Royal Horticultural Society, London, 2007 edition.

-   Botanical classification: Vaccinium hybrid cultivar ‘RIDLEY 1403’. -   Parentage:     -   -   Parents.—Seed parent ‘S02-25-05’ (unpatented). Pollen parent             ‘S03-08-02’ (unpatented). -   Plant:     -   -   Growth habit.—Upright to semi-upright.         -   Growth vigor.—Is strong.         -   Plant height.—Is approximately 2.0 m.         -   Plant width.—Is approximately 1.2 m.         -   Flower bud density.—Is medium.         -   Twigginess.—Is low.         -   Time of beginning of flowering.—Is very early (begins late             April to early May; peaks mid July) when grown as an             evergreen in Australia.         -   Time of fruit ripening.—Is early to medium (begins mid July;             peaks mid October) when grown as an evergreen in Australia. -   Stem:     -   -   Suckering tendency.—Plants typically have 5-7 major canes             per plant from a base 25 cm in diameter on 4 year old             plants.         -   Canes.—Erect to semi-erect with moderate branching; color             greyed green 198C; 2 year old cane diameter 11 mm, colored             grayed orange 177B, some flaking of bark, current season             wood diameter 3-4 mm, colored yellow green 144C. Internode             length on strong, new shoots 15-20 mm.         -   Fruiting wood.—Numerous twigs to 10 cm in length.         -   Surface texture of new wood.—Smooth. -   Fully developed leaf:     -   -   Length.—Long 70-80 mm.         -   Width.—Broad approximately 35 mm.         -   Shape.—Elliptic.         -   Upper leaf surface color.—Green 137A.         -   Lower leaf surface color.—Yellow green 147C.         -   Intensity of color.—Medium.         -   Margin.—Entire.         -   Undulation of margin.—Weak.         -   Pubescence of upper side.—Absent.         -   Pubescence of lower side.—Absent.         -   Cross sectional profile.—Flat.         -   Longitudinal profile.—Straight.         -   Attitude broad.—Acute to horizontal.         -   Leaf apex.—Acute to abruptly acute.         -   Leaf base.—Obtuse.         -   Leaf venation.—Upper and lower reticulate.         -   Leaf venation upper surface color.—Same as upper surface             color green RHS 137A.         -   Leaf venation lower surface color.—Same as lower surface             color yellow green RHS 147C.         -   Petiole.—Petiole length: 2.0 to 3.0 mm. Petiole diameter:             2.5 to 3.0 mm. Petiole color: yellow green RHS 147C-D,             anthocyanin coloration present, approximately grayed red RHS             181 A-B, may extend into proximal half of upper and lower             side midrib. Petiole texture of surface: smooth —             coriaceous. -   Inflorescence:     -   -   Inflorescence diameter.—15-20 mm.         -   Inflorescence length (depth).—20-30 mm.         -   Length of peduncle.—To 12 mm.         -   Color of peduncle.—Approximates to yellow green RHS 146C to             147C.         -   Length of pedicel.—Long 4-6 mm.         -   Color of pedicel.—Approximates to yellow green RHS 146C.         -   Number of flowers per cluster.—Median 8.         -   Flower cluster density.—Is medium-dense. -   Flower bud:     -   -   Size.—Length 10 to 13 mm, diameter 6 to 7 mm.         -   Shape.—Elliptic to ovate with acute apex.         -   Color.—Corolla white RHS NN155D distally with basal             anthocyanin coloration approximating RHS 181D on ridges and             immature calyx lobes colored yellow green RHS 138C. -   Flowers:     -   -   Length of corolla tube.—Medium to long (to 16 mm).         -   Width of corolla tube.—Medium to broad (to 10 mm).         -   Corolla aperture diameter.—3-5 mm.         -   Color of corolla.—White 155D.         -   Anthocyanin coloration of corolla.—Absent.         -   Corolla ridges.—Present.         -   Protusion of stigma.—Absent.         -   Fragrance.—Weak.         -   Shape.—Urceolate.         -   Abundance of pollen.—High.         -   Calyx (with sepals) diameter.—5-6 mm.         -   Calyx (sepals) upper and lower surface color.—Green 138A.         -   Calyx depth (length) at flowering stage.—3 to 4 mm.         -   Sepal length at flowering stage.—3 mm.         -   Pistil.—Pistil number: 1. Length: 9 to 11 mm. Color: yellow             green RHS 138 C-D.         -   Stamen.—Stamen number: 10-15. Length: 3 mm. Color:             approximately grayed orange RHS 167C-D. -   Productivity: 3 to 4 kg per season from 3-4 year old plants planted     at 3.0 m×0.9 m density. -   Tolerance to disease: Moderate resistance to root disease     (phytophthora spp) and good resistance to blueberry rust. Also     demonstrates good resistance to Stem Blight (Botryosphaeria     dothidea). -   Resistance to pests: Is typical of the species with no documented     pest problems found. -   Cold hardiness: ‘RIDLEY 1403’ has not been grown in all environments     including harsh winter environments. Cold tolerance is expected to     be low. -   Chilling requirement: ‘RIDLEY 1403’ has not been grown in all     environments and is typically grown as an evergreen crop where     chilling hours are not important. ‘RIDLEY 1403’ is classed as ‘low     chill’, typical of Southern Highbush Blueberry varieties with an     estimated chilling requirement of 250 hours (not tested). -   Leafing: Plants retain leaves year round (at Lindendale, NSW     Australia) and ‘RIDLEY 1403’ is grown commercially as an evergreen     crop. New leafing occurs in mid to late August at Lindendale, NSW     Australia. -   Fruit:     -   -   Unripe fruit color.—Intensity light.         -   Unripe fruit color.—144A.         -   Cluster density.—Is medium to dense.         -   Diameter.—Is very large (mean 24 mm).         -   Weight.—Heavy (approximately 5.2 g).         -   Shape.—Round.         -   Attitude of calyx.—Erect.         -   Diameter of calyx basin.—Large (mean 8.1 mm).         -   Depth of calyx basin.—Is deep (to 3.0 mm).         -   Intensity of bloom.—Medium.         -   Intensity of blue color of skin with bloom removed.—Is dark.         -   Color of skin.—202A.         -   Sweetness when ripe.—Medium.         -   Firmness when ripe.—Medium.         -   Acidity when ripe.—Medium to high.         -   Size of scar.—Is small (1.0-1.5 mm).         -   Storage.—Quality good.         -   Number of berries per cluster.—5 to 8.         -   Flesh color.—Grayed green RHS 194A to 195A.         -   Date of 50% maturity.—Approximately 10^(th) October at             Lindendale, NSW Australia.         -   Fruit development period.—Approximately 75 days in protected             cultivation at Lindendale, NSW Australia. -   Seed:     -   -   Seed color.—Greyed orange 165B.         -   Seed abundance in fruit.—Medium.         -   Seed size.—1.6-1.8 mm long for fully developed seeds.         -   Number of seeds per fruit.—50 to 100.

TABLE 1 Comparison with other varieties (extract from Australian PBR data) Organ/Plant Part: Context Ridley 1403 C99-42 C03-158 Plant: growth vigour strong medium to medium to strong strong Plant: growth habit upright to upright to semi semi upright semi upright upright Leaf: length long to very long to very long to very long long long Leaf: width broad medium to broad broad Leaf: shape elliptic elliptic elliptic Leaf: colour of upper side green green green Leaf: intensity of green medium dark light colour on upper side (varieties with green leaf colour only) Leaf: margin entire entire entire Flower: size of corolla tube medium to medium medium large Flower: anthocyanin absent or very weak medium absent or coloration of corolla tube weak very weak Flower: ridges on corolla present present present tube Flower: protusion of stigma absent present absent Fruit cluster: density medium to dense medium dense Unripe fruit: intensity of light light light green colour Fruit: size very large large large Fruit: shape in longitudinal round round oblate section Fruit: attitude of sepals erect erect erect Fruit: diameter of calyx large medium medium to basin large Fruit: depth of calyx basin deep deep shallow Fruit: intensity of bloom medium medium medium Fruit: colour of skin dark blue dark blue dark blue Fruit: firmness medium firm medium medium to firm Fruit: sweetness medium medium low to medium Fruit: acidity medium to low to medium high medium Fruit: size of scar small small small Fruit: average weight of ripe 5.2 2.4 2.8 berry (g) Time of: vegetative bud early to medium to late early burst medium Time of: beginning of very early early to early to flowering on current years medium medium shoot Time of: beginning of fruit early to early to early to ripening on current years medium medium medium shoot 

What is claimed is:
 1. A new and distinct cultivar of Vaccinium hybrid plant named ‘RIDLEY 1403’, substantially as herein shown and described. 